Answer:
11x^2-8x-14
Explanation:
2x^2- 8x– 6 and 9x^2-8
solution:
2x^2- 8x– 6 +(9x^2-8)
=2x^2-8x–6+9x^2-8
=2x^2+9x^2-8x-6-8
=11x^2-8x-14
(2x^2- 8x– 6)+(9x^2-8) = 11x^2-8x-14
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